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Proceedings Paper

Optical manifestation of thermal expansion of a nematic liquid crystal
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Paper Abstract

A unique feature of liquid crystals (LCs) is orientational order of molecules that can be controlled by electromagnetic fields, surface modifications and pressure gradients. We describe a new effect in which the orientation of LC molecules is altered by thermal expansion. Thermal expansion (or contraction) causes the LC to flow; the flow imposes an orienting torque on the LC molecules and the optical axis. The optical and mechanical responses activated by a simple temperature changes can be used in sensing, photonics, microfluidic, optofluidic and lab-on-a-chip applications as they do not require externally imposed gradients of temperature, pressure nor electromagnetic fields.

Paper Details

Date Published: 11 October 2012
PDF: 7 pages
Proc. SPIE 8475, Liquid Crystals XVI, 84750G (11 October 2012); doi: 10.1117/12.927745
Show Author Affiliations
Oleg D. Lavrentovich, Kent State Univ. (United States)
Young-Ki Kim, Kent State Univ. (United States)
Bohdan I. Senyuk, Kent State Univ. (United States)


Published in SPIE Proceedings Vol. 8475:
Liquid Crystals XVI
Iam Choon Khoo, Editor(s)

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